Allen-Bradley SLC 500 Module | 1746-OBP16 DC Output Card

Allen-Bradley SLC 500 Digital DC Output Module 1746-OBP16

The Allen-Bradley 1746-OBP16 is a 16-point DC sourcing output module for the SLC 500 system. It provides robust 24V DC outputs with electronic short-circuit protection for driving solenoids, valves, and indicators.

Technical Specifications

• Brand & Model: Allen-Bradley 1746-OBP16
• Series: SLC 500 I/O Module
• Module Type: 16-Point Sourcing DC Output
• Number of Outputs: 16 channels
• Output Voltage: 20.4 to 26.4 V DC (24V DC nominal)
• Output Type: Sourcing (provides +24V)
• Continuous Current per Point: 2.0 A @ 0-60°C
• Derated Current per Point: 1.5 A or 1.0 A (at higher temperatures)
• Total Module Current: 6.4 A maximum
• Surge Current: 24.0 A per point for 10 ms
• Response Time: ON: 1.0 ms max; OFF: 2.0 ms max
• Off-State Leakage: 1 mA maximum
• Protection: Electronic short-circuit and overload protection
• Backplane Current (5V): 250 mA
• Module Weight: 0.54 kg

Key Features

• 16 high-current sourcing outputs for direct device control
• Built-in electronic fusing protects against short circuits
• High inrush capability (24A surge) for demanding loads
• Fast switching speeds for responsive control
• Designed for reliable operation in industrial environments

Installation & Wiring

• Install in any SLC 500 chassis slot
• Requires an external 24V DC power supply (20.4-26.4V DC)
• Connect loads between the output point and common (ground)
• Ensure total module current does not exceed 6.4A
• Electronic protection resets automatically after fault is cleared

Shipping Information

• 1x 1746-OBP16 output module
• Approximate shipping weight: 0.8 kg
• Secure protective packaging
• Shipped via FedEx, UPS, or DHL

FAQ

• What does "sourcing output" mean?
  The module supplies the positive voltage (+24V). The load must be connected between the output terminal and the common (0V) terminal to complete the circuit.
• What happens during a short circuit?
  The electronic protection circuit limits the output current, preventing damage. The output turns off and typically resets once the fault is removed.
• Can it drive DC solenoids and contactor coils?
  Yes, its 2A per point rating and high surge current make it ideal for inductive loads like solenoids, contactors, and small motor starters.